Re: [PATCH] leds: tlc591xx: fix leak of device node iterator

[Marek Behun]

On Sat, 26 Sep 2020 01:10:11 +0200
Tobias Jordan <kernel@xxxxxxx> wrote:

> In one of the error paths of the for_each_child_of_node loop in
> tlc591xx_probe, add missing call to of_node_put.
> 
> Fixes: 1ab4531ad132 ("leds: tlc591xx: simplify driver by using the
> managed led API")
> 
> Signed-off-by: Tobias Jordan <kernel@xxxxxxx>
> ---
>  drivers/leds/leds-tlc591xx.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
> index 0929f1275814..a8cc49752cd5 100644
> --- a/drivers/leds/leds-tlc591xx.c
> +++ b/drivers/leds/leds-tlc591xx.c
> @@ -214,6 +214,7 @@ tlc591xx_probe(struct i2c_client *client,
>  		err = devm_led_classdev_register_ext(dev, &led->ldev,
>  						     &init_data);
>  		if (err < 0) {
> +			of_node_put(child);
>  			if (err != -EPROBE_DEFER)
>  				dev_err(dev, "couldn't register LED %s\n",
>  					led->ldev.name);

This won't apply on pavel's for-next tree, there is no check for
EPROBE_DEFER, see
https://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds.git/tree/drivers/leds/leds-tlc591xx.c?h=for-next